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听力文摘：喝茶可以预防癌症?
Dear A Moment Of Science, Can you settle a debate between my friend and me? 亲爱的科学一刻,您能否解决我和朋友之间的一场争论么？ She says thatgreen tea has some magic property that fights cancer. 她说绿茶具有抗癌的魔力
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听力文摘：大孩子小孩子
Remember seesaws? Those things were great. 还记得跷跷板吗？它可是伟大的发明， But there wasoften a problem. 但仍然存在一个问题。 Suppose there's a big kid on one side and a smaller kid on theother side. 假设跷跷板的一边
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听力文摘：迷幻蘑菇
I've heard that psilocybin, which is the hallucinogenicingredient in psychedelic mushrooms, can alter people'spersonalities and make them nicer. 我听说裸头草碱是迷幻蘑菇中的一种迷幻成分，能改变人的性格使他们的性格变得
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听力文摘：麻醉功效
If you've ever had major surgery, you probably remember lying down and waking upbut nothing inbetween. 如果你曾经动过手术，你可能会记得躺下和醒来这两个动作，但是对中间发生的事情一无所知。 Thanks to the anesth
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听力文摘：养狗才能释放压力
As most dog owners will attest, having a dog is great for severalreasons. 大多数养狗人士都能证明养狗确实有很多好处。 For one, dogs are typically loyal, steady companions. 首先，狗十分忠心，是长久的伙伴。 Many stud
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听力文摘：人体如何造血
If blood didn't circulate through our bodies, carrying oxygenand nutrients, we wouldn't be able to live. 如果血液不能在我们身体内循环，为人体输送氧气和营养，我们便无法存活。 Blood is soimportant to life that the body
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听力文摘：运动会引发头痛吗?
Dear A Moment of Science, 亲爱的科学一刻： I like to exercise, but I suffer from migraines and worry thatgetting my sweat on at the gym could trigger a headache. 我喜欢运动，但我患有偏头痛，担心去健身房运动到出汗会引发
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听力文摘：本·富兰克林没有被雷击
Everybody has heard the famous story of how pioneeringexperimenterand part-time founding fatherBen Franklin tied a key to a kite string and flew thekite in a thunderstorm. 大家都听过这个有名的故事：本.富兰克林这位开创性的实验者
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听力文摘：瞳孔的秘密
The size of our pupils can give clues to our interest,emotions,attitudes, and thought processes. 瞳孔大小能为我们了解自身兴趣、情感、对事物的看法以及思维过程提供线索。 If you've seen a magician tell which card someo
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听力文摘：午休的学问
When you go back to work or class after lunch, why is it so hard to stay awake? 当我们用完午餐回去工作或上课时，为什么很难保持清醒呢？ Although we get energy from food, we also use lots of energy to digest it. 尽管我们从
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听力文摘：气泵上的辛烷值是什么意思?
At the gas pump, you have a choice of octane numbers.87? 93? 气泵上有两个辛烷值，87和93。你会选择哪个？ What's the difference? 这两个数字有什么不同呢？ To explain octane numbers,let's take an imaginative leap into the i
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听力文摘：驯鹿的秘密
Rudolph the reindeer is best known for his brightly colored rednose. 鲁道夫驯鹿最大的特征就是红彤彤的鼻子。 For other reindeer, however, the most colorful thingabout them is actually their eyes. 然而，其他驯鹿身上最出彩的
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听力文摘:雪上加霜
Imagine a situation where a person has needlessly been injured by another. 想象一下，如果一个人毫无理由地被另一个人弄伤了。 The injured person is naturally hoping for some help. 这个受伤的人自然希望得到一些帮助。
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听力文摘:试探舆论反应
Most of us know balloons from festivals and fun fairs, where they are colorful and amusing, but in the 19th century, before airplanes were invented, balloons were used in wartimes to spy on the enemy position. 我们大多数人都知道，人们在节
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听力文摘:联合国发起"大猩猩年"
UN officially launched year of Gorilla 联合国正式发起大猩猩年 The Year of the Gorilla began on Dec. 1-a U.N. effort to raise money for primates threatened with extinction from disease, hunting and deforestation. 11月1日由联合国官员发
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